Back to: PRIMARY SEVEN P7 SCIENCE TOPICAL QUESTIONS AND ANSWERS
Petroleum / crude oil
Qn. What is petroleum?
- Petroleum is a fossil fuel that was formed from the remains of animals that died many years go.
Qn. Give the examples of products of petroleum. - Petrol
- Diesel
- Jet fuel
- Paraffin / kerosene
- Natural gas
Qn.State the importance of petroleum products.
Petroleum products can generate power that can run big machines. Petroleum products are burnt to produce heat and light.
Qn. Identify the process by which petroleum products or crude oil is separated. - Fractional distillation.
Coal as an energy resource.
Qn. What is coal? - Coal is a hard black material formed from the remains of plants that lived thousands of years ago.
Qn. State the importance of coal. - Coal is used to generate thermal electricity.
- Coal is used to make tar for surfacing roads.
- Coal is used as fuel in steam engines.
Qn. Give the other products from petroleum. - Plastics
- Polythenes
- Dye
- Vaseline
- Paint
- Fertilizers
Qn. Give the other products from coal. - Paint
- Perfumes
- Fertilizers
- Minerals as energy resources (uranium)
Qn. How are minerals (uranium) used as an energy resource?
Uranium is burnt to produce atomic electricity. - Uranium is used as fuel in nuclear powered sub-marines.
- Uranium is used to make atomic bombs.
Qn. State the ways of conserving non-renewable energy resources. - By having controlled mining of minerals.
- By using other alternative sources of fuel e.g. biogas instead of petroleum.
- By walking distances which are not too long to conserve petroleum products.
- By riding bicycles in short distances than driving cars to save fuel.
- By repairing vehicles which are under dangerous mechanical conditions in order to save fuel.
Environmental conservation
Qn. What is environmental conservation?
- Environmental conservation is the protection and preservation of resources in the environment.
Qn. Give reasons for conserving resources. - For future use.
- To prevent extinction of resources
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